# Math

In a large section of a statistics class, the points for the final exam are normally distributed, with a mean of 72 and a standard deviation of 9. Grades are to be assigned according to the following rule:

What is the least amount of points that a student must score, on the final exam, in order to earn a D? (Round your answer to two decimal places.)

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1. using same web site for normal dist
A = .1
M = 72
sd = 9

.1 area is anything below 60.46

If I try bottom .3, anything below a C, I get
A = .3 ---> below 67.28, that is the boundary for the HIGHEST D

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